2,3-O-isopropylidene-5-iodo-D-ribono-1,4-lactone | 96239-82-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3-O-isopropylidene-5-iodo-D-ribono-1,4-lactone
• 英文别名: (3aR,6S,6aS)-6-(iodomethyl)-2,2-dimethyldihydrofuro[3,4-d][1,3]dioxol-4(3aH)-one；(3aR,6S,6aS)-6-(iodomethyl)-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-one
• CAS: 96239-82-6
• 化学式: C₈H₁₁IO₄
• 分子量: 298.077
• InChiKey: PYQVLBGTFIFUGH-HSUXUTPPSA-N

物化性质

• 沸点：
  360.7±37.0 °C(Predicted)
• 密度：
  1.744±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2,3-O-isopropylidene-5-iodo-D-ribono-1,4-lactone 在 铜 、 间氯过氧苯甲酸 、 锌 作用下， 以 氯仿 、 丙酮 、 甲苯 为溶剂， 反应 20.0h， 生成 (3R,4R)-3,4-O-Isopropylidene-1-phenylsulfonyl-1,5-hexadiene-3,4-diol
  参考文献：
  名称：

  From carbohydrates to carbocycles: radical routes via Tellurium derivatives

  摘要：

  D-Ribose was transformed to its protected tosylate 15, followed by a Wittig-reaction to give 16 as a 3:1 mixture of the corresponding Z and E isomers. This mixture was then transformed to the anisyltelluride 17 and the latter cyclized in a radical exchange reaction to a mixture of the carbocycles 18a and 18b (in a 17:2 ratio). The major product 18a was then transformed to various chiral cyclopentane derivatives including the cyclopentenone-derivative 23. Various other carbohydrate-based approaches have also been explored.

  DOI：

  10.1016/s0040-4020(01)85616-7
• 作为产物：
  描述：

  2,3-O-isopropylidene-5-O-p-toluenesulfonyl-D-ribono-1,4-lactone 在 sodium iodide 作用下， 以 丙酮 为溶剂， 生成 2,3-O-isopropylidene-5-iodo-D-ribono-1,4-lactone
  参考文献：
  名称：

  来自碳水化合物的碳环化合物：对映体纯的前列腺素中间体的简单途径

  摘要：

  烯酮7是前列腺素三组分偶联方法中的关键中间体，已通过分子内羟醛缩合反应从市售D-核糖酸γ-内酯高效制备。

  DOI：

  10.1016/s0040-4039(00)80802-3

文献信息

• Copper‐Catalyzed Difluoromethylation of Alkyl Iodides Enabled by Aryl Radical Activation of Carbon–Iodine Bonds
  作者：Aijie Cai、Wenhao Yan、Chao Wang、Wei Liu

  DOI：10.1002/anie.202111993

  日期：2021.12.20

  An aryl radical activation strategy has been developed that can engage unactivated alkyl iodides in copper-catalyzed Negishi-type cross-coupling reactions. The strategy is based on the largely overlooked yet highly efficient reactivity of aryl radicals to abstract iodine atoms from alkyl iodides.

  已经开发出一种芳基自由基活化策略，可以在铜催化的 Negishi 型交叉偶联反应中使用未活化的烷基碘。该策略基于芳基自由基从烷基碘化物中提取碘原子的很大程度上被忽视但高效的反应性。
• Synthesis of screening substrates for the directed evolution of sialic acid aldolase: towards tailored enzymes for the preparation of influenza A sialidase inhibitor analogues
  作者：Thomas Woodhall、Gavin Williams、Alan Berry、Adam Nelson

  DOI：10.1039/b501503k

  日期：——

  The stereoselective synthesis of two epimeric screening substrates, (4R, 5R, 6R)- and (4S, 5R, 6R)-6-dipropylcarbamoyl-2-oxo-4,5,6-trihydroxy-hexanoic acid, for the directed evolution of sialic acid aldolase is described. The complementary methods relied on stereoselective indium-mediated additions of ethyl alpha-bromomethyl acrylate to functionalised aldehydes. With an alpha-hydroxy aldehyde, (2R

  两种选择性异构筛选底物（4R，5R，6R）-和（4S，5R，6R）-6-二丙基氨基甲酰基-2-氧代-4,5,6-三羟基己酸的立体选择性合成描述了唾液酸醛缩酶。补充方法依赖于立体选择性铟介导的丙烯酸α-溴甲基丙烯酸乙酯向官能化醛的添加。用α-羟基醛，（2R，3R）-2,3-二羟基-4-氧代丁酸二丙酰胺进行螯合控制，合成产物（6R，5R，4S）-6-二丙基氨基甲酰基-2得到-亚甲基-4,5,6-三羟基己酸乙酯。相反，向（2R，3R）-N，N-二丙基-2,3-O-异亚丙基-4-氧代丁酰胺中添加立体化学结果与Felkin-Anh对照和抗加合物（4R，5R ，6R）-6-二丙基氨基甲酰基-2-亚甲基-4-羟基-5，主要产物6-O-异亚丙基-己酸乙酯。臭氧分解和脱保护以高收率得到了以呋喃糖和吡喃糖形式的混合物的筛选底物。
• Studies on the chemoselectivity and diastereoselectivity of samarium(II) iodide mediated transformations of carbohydrate derived ω-halo-α,β-unsaturated esters
  作者：Sharon M. Bennett、Raphinos Kouya Biboutou、Zhihong Zhou、Robert Pion

  DOI：10.1016/s0040-4020(98)00191-4

  日期：1998.5

  Some carbohydrate derived ω-bromo- and ω-iodo- α,β- unsaturated esters were reduced with SmI2 under a variety of conditions. The chemoselectivity varies dramatically with the choice of solvent system, the identity of halogen atom, the type of ester used, the geometry of the double bond, and the oxygenation pattern of the substrate. The stereoselectivity of the SmI2 mediated reactions is also influenced

  在各种条件下，SmI 2还原了一些碳水化合物衍生的ω-溴-和ω-碘-α，β-不饱和酯。化学选择性随溶剂系统的选择，卤素原子的身份，所用酯的类型，双键的几何形状以及底物的氧化方式而有很大不同。SmI 2介导的反应的立体选择性也受反应参数的影响。
• Aryl Radical Enabled, Copper-Catalyzed Sonogashira-Type Cross-Coupling of Alkynes with Alkyl Iodides
  作者：Xiaojun Zeng、Chao Wang、Wenhao Yan、Jian Rong、Yanshan Song、Zhiwei Xiao、Aijie Cai、Steven H. Liang、Wei Liu

  DOI：10.1021/acscatal.2c05901

  日期：2023.2.17

  Despite the success of Sonogashira coupling for the synthesis of arylalkynes and conjugated enynes, the engagement of unactivated alkyl halides in such reactions remains historically challenging. We report herein a strategy that merges Cu-catalyzed alkyne transfer with the aryl radical activation of carbon–halide bonds to enable a general approach for the coupling of alkyl iodides with terminal alkynes

  尽管Sonogashira偶联在芳基炔和共轭烯炔的合成中取得了成功，但未活化的烷基卤化物在此类反应中的参与在历史上仍然具有挑战性。我们在此报告了一种将铜催化的炔烃转移与碳卤化物键的芳基自由基活化相结合的策略，以实现烷基碘与末端炔烃偶联的通用方法。这种前所未有的Sonogashira型交叉偶联反应可耐受多种官能团，并已应用于密集功能化药物的后期交叉偶联以及正电子发射断层扫描示踪剂的合成。
• Strategies and tactics for free radical carbocyclization: synthesis of polyfunctionalized cyclopentanoid molecules from carbohydrates
  作者：José Marco-Contelles、Pilar Ruiz、Luis Martínez、Angeles Martínez-Grau

  DOI：10.1016/s0040-4020(01)81837-8

  日期：1993.7

  The tributyltin hydride + azobisisobutyronitrile (AIBN) mediated free radical carbocyclization of precursors 1-9, 48 and 49 is described. The resulting carbocycles have been obtained in moderate yield and good diastereoselectivity. These polyfunctionalized, enantiomerically pure cyclopentane derivatives are useful intermediates for further manipulation.